| article html file updated | 12 February 2020 02:14 CET | Update | https://www.mdpi.com/2218-1997/5/4/88 |
| article html file updated | 8 May 2019 18:33 CEST | Update | N/A |
| article html file updated | 25 April 2019 18:28 CEST | Update | N/A |
| article html file updated | 17 April 2019 11:52 CEST | Original file | N/A |
| article pdf uploaded. | 17 April 2019 11:51 CEST | Updated version of record | https://www.mdpi.com/2218-1997/5/4/88/pdf |
| article xml uploaded. | 17 April 2019 11:51 CEST | Update | https://www.mdpi.com/2218-1997/5/4/88/xml |
| article xml file uploaded | 17 April 2019 11:51 CEST | Update | N/A |
| article pdf uploaded. | 1 April 2019 14:45 CEST | Version of Record | https://www.mdpi.com/2218-1997/5/4/88/pdf-vor |
| article xml file uploaded | 1 April 2019 14:45 CEST | Original file | N/A |
